IB Biology SL 1.2.5 Translation Question Bank
Practise IB Biology SL 1.2.5 by outlining translation and explaining how ribosomes use mRNA to assemble a polypeptide.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Outline how mRNA codons, tRNA anticodons and ribosomes coordinate translation.
- Explain where amino acids are joined to form a polypeptide chain.
- Distinguish translation from transcription by the molecules and cellular location involved.
D1.2.5—Translation question 1
[Maximum number: 5]
People with the inherited disease hemophilia have a deficiency in one of the proteins that act as clotting factors in blood.
Outline how a protein is made in a cell by the process of translation.
a. translation occurs on ribosomes when proteins/polypeptides are synthesized;
b. amino acid sequence of a protein is determined by the mRNA;
c. mRNA is determined by the order of bases of DNA/order of bases sequence in a gene;
d. codons (of 3 bases) on mRNA correspond to one amino acid in a polypeptide;
e. codons are on mRNA and anticodons on tRNA;
f. mRNA binds to ribosome/(during initiation) small ribosomal subunit binds to the start of the mRNA sequence;
g. tRNA transfers an amino acid to large ribosomal subunit/to the ribosome;
h. reference to start or stop codon;
i. tRNA moves to the next mRNA codon to continue the process, creating an amino acid chain;
j. peptide bond formed between amino acids
k. translation/order of amino acids depends on complementary base pairing between codons and anticodons;
5 max
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